MINIGOLF BALL Russian patent published in 2017 - IPC A63B21/00 

FIELD: sports.

SUBSTANCE: 'minigolf ball' invention is intended for use in sports games, in particular in minigolf. Minigolf balls have five main characteristics: bounce, mass, hardness (rigidity), diametre, surface coating. The surface of the ball can be of three types: unvarnished, varnished and with wrinkled varnish, which determines its rolling friction coefficient and sliding friction coefficient. Nevertheless, the diameter of the minigolf ball must be from 37.0 to 43.0 mm. Ball bounce must not exceed 85 cm when it is thrown on concrete from a height of 1 m at 25°C. Different parts of the track (horizontal or inclined surfaces, obstacles) have their own characteristics. When moving along a track, the ball, due to its construction or interaction with the side of the track, is in different conditions. The surface of spherical segments of minigolf ball with rigidity, sliding friction coefficient, rolling friction coefficient, or any combination of them differs from the rigidity, sliding friction coefficient, rolling friction coefficient, or any combination of them of ball layer surface, whose thickness is not less than 25% of the ball diameter. The ball layer, in contrast to spherical segments of the ball, can be made of various materials. The outer layer of the ball layer can be made in the form of a ring, and the rest of the ball can be made of a homogeneous material, for example rubber or a thin coating, which complies with the spherical shape. In comparison to the famous balls, the proposed minigolf balls extend the range of the initial speed, ensuring passage of the track in a single hit, making it less complex.

EFFECT: increased likelihood of getting the ball into the hole in a single hit when playing minigolf.

2 cl, 9 dwg